BSD 4_1c_2 release

[unix-history] / usr / src / ucb / pascal / pxp / case.c

static  char *sccsid = "@(#)case.c      1.1 (Berkeley) 3/2/81";
/* Copyright (c) 1979 Regents of the University of California */
#
/*
* pxp - Pascal execution profiler
*
* Bill Joy UCB
* Version 1.2 January 1979
*/

#include "0.h"
#include "tree.h"

/*
* Case statement
*/
caseop(r)
       int *r;
{
       register *cl, *cs, i;
       struct pxcnt scnt;

       savecnt(&scnt);
       ppkw("case");
       ppspac();
       rvalue(r[2], NIL);
       ppspac();
       ppkw("of");
       for (cl = r[3]; cl != NIL;) {
               cs = cl[1];
               if (cs == NIL)
                       continue;
               baroff();
               ppgoin(DECL);
               setline(cs[1]);
               ppnl();
               indent();
               ppbra(NIL);
               cs = cs[2];
               if (cs != NIL) {
                       i = 0;
                       for (;;) {
                               gconst(cs[1]);
                               cs = cs[2];
                               if (cs == NIL)
                                       break;
                               i++;
                               if (i == 7) {
                                       ppsep(",");
                                       ppitem();
                                       i = 0;
                               } else
                                       ppsep(", ");
                       }
               } else
                       ppid("{case label list}");
               ppket(":");
               cs = cl[1];
               cs = cs[3];
               getcnt();
               ppgoin(STAT);
               if (cs != NIL && cs[0] == T_BLOCK) {
                       ppnl();
                       indent();
                       baron();
                       ppstbl1(cs, STAT);
                       baroff();
                       ppstbl2();
                       baron();
               } else {
                       baron();
                       statement(cs);
               }
               ppgoout(STAT);
               ppgoout(DECL);
               cl = cl[2];
               if (cl == NIL)
                       break;
               ppsep(";");
       }
       if (rescnt(&scnt))
               getcnt();
       ppnl();
       indent();
       ppkw("end");
}